/*
 * Copyright 2019-present HiveMQ GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.hivemq.extensions.rbac.redis;

import com.hivemq.extension.sdk.api.auth.Authenticator;
import com.hivemq.extension.sdk.api.auth.parameter.AuthenticatorProviderInput;
import com.hivemq.extension.sdk.api.services.auth.provider.AuthenticatorProvider;
import com.hivemq.extensions.rbac.redis.configuration.entities.ExtensionRedisConfig;
import com.hivemq.extensions.rbac.redis.utils.RedisKeyOnecCredentialsValidator;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * 1. 身份验证器-实现器
 */
class RedisAuthenticatorProvider implements AuthenticatorProvider {

    private final @NotNull RedisAuthAuthenticator authenticator;

    RedisAuthenticatorProvider(
            final @NotNull RedisKeyOnecCredentialsValidator credentialsValidator, final @NotNull ExtensionRedisConfig extensionRedisConfig) {
        this.authenticator = new RedisAuthAuthenticator(credentialsValidator, extensionRedisConfig);
    }

    @Override
    public @Nullable Authenticator getAuthenticator(final @NotNull AuthenticatorProviderInput authenticatorProviderInput) {
        //Always return the same authenticator, because it is thread-safe and can be shared between multiple clients
        return authenticator;
    }
}
